Only during 3D events. Also special announcements. They barely get or have much live viewers during their actual streams. That's why they have only one guy in the Top most superchatted total of all time.
Check Fuwa Minato the 2nd guy on that list. The range is very inconsistent to JP Hololive members. He got $36 on a smash game but then if you look back further: Dark Deception $2,200+,
Slither.io $1,000+ and some Free talk(?) $3,400+. For the 2nd top most superchatted in one stream guy on that list, he's only behind Ayame in total superchatted worldwide. A dichotomy of 1 who barely streams vs one who seems to be streaming every day. Also, seems like Mori is close to taking over 1 of the top 10 spots. Maybe it'll happen this year. Hopefully someone can knockout that one non-vtuber in the top 10 spot so it'll be all vtubers there.